Vacuum-cleaner.



J. J. DUFFIE.

VACUUM CLEANER.

APPLIUATION FILED AUG.2(,1913. EBNEWED PEB. 25. 1915.

lg-M Patented Mar. 30, 1915;

WITNESSES: y N- IN VEN TOR.

A TTOR NE Y.

si. no

none..

Application August Stile. l,li`l. l en Flein-nary l. Serial No. Mime..

Stute ot' California. herve invented new and useful lnipi'ovements in"Vnenum-Cleaners, o which the following is n Speeitioation.

ylhie invention relates to vaeunni @lenneis oi the volume type oi' thoseinwvhieh the onction is induced oy l1 centrifugal fan; the cleaningbeing lone by 'the nfllnt't of e lelntively large "volume o" nii highvelooity'.

rthe object of the present invention is; to niovide simple., practicalmachine., either 'toi' stationery o1 portable use, but partienliii'lydesigned es :i portable ole/nnen toi1 use in homeS und in which machinethe usual settling heg is done away with and in place thereof there isan especially designed metal ieinoinhle il'iistoolleetion Chamber.

Une of the ehie't objections to vacuum cleaners usino' n dnstwolllotionhep; is the oliengi'eenble Ientin'e of the ling nnfl 'ele-ning it. in myoonsswnetion zin eesiljv removable i'eeeptnole employed which can hevoi-jv ooni'enie tljyf emptied.

Other objects; will appear liei'einzittei.

The invention consiste of the parte :incl the Combination sindConstruction of p-.iitfi ..5 lieieinntei more fully tlesoiyibefl andoleiinecl. having i'efeienoe to the neooinpnnyin@I drawings. in. Wliieliligne l is n longitmlinnl vertien-.l seetion illnetnting the invention.Fig. i); is e. l"1oii- Zontzil section on line li r llig. "l, `with n.

portion of the upper fain ense partially lnolen away. Fig. il is nSection on line .wlll Fig. L showingl the sitetionmy inmu'fllydollen-ting wines between the fen..

[i represents :l ense of suitnlole eine :intl Shape, the lon'eiportionof which foune ai housinga .zoi' the motos' and the flw'l, while theiipnei limit of the one@ nloove the tens is adapted to receive niemovahle clust recept: ole 3. This removable. floot ieoeptauleteleeeopes unil fits inside of the top ot the ons@ .3%. und hns itsbottom contiguous to :i partition plate (l in onse il.. Plate o has ncentral hole T registering with the eye 8 of the nppei fan and with thetnloe o" nir column 9 which is carried by and projects upwardly withinthe receptacle 5. The

`veinht ol the i'eceptcle is supported on the top rim of oaseA by ineensof the out ne inliei-nl flange Il() fometl on the telesoopinn; n. iteele5.

ll is :i stninei' oli' Suitable iinl which rents; on ton of teeenteolehas n oentiel hollow sleeve l2 fitting snug' oveil the lionel' slightlytepeied month olf the tulle oiM conduit ll.

lil is a cover lttiingr the top of the filtert ll and inolosing with thefilter the uppei' on 'passage-Way or clininhei ll.

Suitable packing. not here shown, may he inteiposefl between thecontiguous edges the envoi? 13,t`ne iiltei ll. the ieoeptnole 5 find theeasing Il; the parte when so ossemlolletl loeingl suitably' clamped toforni ein tight jointe by nppioplinte menne, ne the Clamping bolts l5;the construction and mode ot' operation of which are Well known.

ln operation the nii* from the suction tool, oi any number ot tools,zioooiding to the ce pneity of the machine, is admitted into theolnnnloei' 16 in. the ret-entente through the pipe i7; the lzittei'being preferably ouin/'ed :ind arming/fed so :is to discharge the niiolif euin'terentinlly against the eni'i'ed welll of ehziinliei lowhereby `the nii will swirl :iioiinil the Chamb/ei and. sillow theheavier solid pnitiolef; and refuse to settle in moet tee-.le Under theaction of the funs the nii is then alinnn up thi'ongh filter ll intoohziinloer llnnd thence down the con duit 9 through the eje 'cl o tain3; being diseh Uecl :it the peripheifitl outlet 1&3. Beand l is epartition :'20 on nieteen the loins o the lippe-i* side. ofwliieh unethe stationary vaines 2l by which the nii clisolniigeil :it highi'elooitj,7 thiongh the outlet 18 isi directed nach the Central openinin plate it() n'heie it picked. up. -loy wle second -l and finallyClinolmigetl nt accelerated te loeity et into the inotoichamber 24whence it io allowed to escape freely to the outer nti'nospheie; the(li-:itt ol" oir thi'ongh ehninhei E34.- .ffzetvingg to keep thenioto'f' 2 cool.

The ooinitinetion ol the liltei' ll while oft' any eni'tnhle 'tminpiei'Fei'nhly on'iboclies en nnnnlni' iiin 5 having; n downwardlypi'ojecting annnlni* flnne'e 2@ to teleeoope over the outside etlnje olthe receptacle 5; 'the fabric ot' the iltei' being' clamped between thei'ing iini 125 and :in underneath Ting; plate., which may loe of lightsheet metal; suitable adhesive being;l employed to keep the E endtogether. The flange sleeve l@ is l `passed through a central 'hole inthe filtering fabric and is glued or otherwise sui-tably securedthereto.

The motor'is preferably directly connected to the fansso as to run themat maximum velocity and I prefer a multi-stage fan or 4turbineconstruction for obvious practical reasons The method of` directing theair from the first fan to the second by means of the partition 20 anddeiiectors Z1 is a very practical' and simple expedient. The orifice 7in plate l6 which constitutes the inlet to the fan chambers has a crossarea of such size that it will not allow more air to go through than thefans can handle without eventaxing the motor. In other words, in orderto economize power a small motor is used to `drive a fan or-fans which'latter could it' ther'air inlet was uncontrolled, be so operated as toover-load the motor and burn it out. The size of this orifice isdetermined lby experiment and is a mere matter of engineering skill. lThe chief feature of the present invention is the removable receptacle 5and lter ll whereby all the disadvantages of theset-l tling bag are doneaway with.

The device as now constructed is very compact, of few parts and readilyaccessible. vManifestly various changes may be made in the details ofvconstruction herein shown and described without departing from theinvention. It is also manifest that any suitable type of suctioninducing means may be employed.

I claim: l l. In a. vacuum cleaner, the combination of a casinginclosing a motor and suction apparatus, vand a removable receptaclefitting in the top of the casing and over the suction apparatus, saidreceptacle having a. central upwardly extending 4 air column openingthroughA the bottom of the receptacle into the suction apparatus, a.cover, removable ilter medium between said 'cover and said receptacleencircling the column and inclosing with the receptacle an air inletchamber, and a single means for locking the cover, receptacle and casingtogether,

and thereby clamp the filter medium in place, said chamber in thereceptacle having an air inlet, said parts so constructed and arrangedthat on the operation of the motor air is drawn into the receptaclethence through the filtering medium and thence outwardly through thecolumn into and through the suction apparatus.

f2. ln a vacuum cleaner, the combination of a casing inclosing a motorand suction apparatus, a removable receptacle fitting in the topof thecasing over the suction apparatus, said receptacle having a centralupwardly extending tube opening through the bottom of the receptacleinto the suction apparatus, y

Witnesses.

JGHN .LDUFFEE Witnesses:

IRVINE SINNETT, H. B. DENsoN.

